Fix issues caught by Android Lint am: d0d5415ff4 am: fa32132f9a

Original change: https://android-review.googlesource.com/c/platform/external/androidplot/+/1346923

Change-Id: I4fdf14d888e532bfe12ffbb848fb37348bb0a433

Examples/DemoApp/res/values/style.xml

diff --git a/Examples/DemoApp/res/values/style.xml b/Examples/DemoApp/res/values/style.xml
index 188f3a0..4c35081 100644
--- a/Examples/DemoApp/res/values/style.xml
+++ b/Examples/DemoApp/res/values/style.xml
@@ -14,7 +14,7 @@
   ~    limitations under the License.

   -->

 

-<resources xmlns:android="http://schemas.android.com/apk/lib/com.androidplot.xy">

+<resources xmlns:android="http://schemas.android.com/apk/res/android">

     <style name="sample_activity">

         <item name="android:layout_width">fill_parent</item>

         <item name="android:layout_height">fill_parent</item>